【单选题】在磁盘和磁带这两种磁介质存储器中,存取时间与存储单元的物理位置有关,按存储方式分, 。
【单选题】When an economist refers to a product as a "normal good," it implies that
A.
when incomes rise, demand for that product will fall.
B.
when incomes decline, demand for that product will fall.
C.
there are many good substitutes for the product.
D.
the product is of poor quality.
【单选题】在磁盘和磁带这两种磁介质存储器中,存取时间与存储单元的物理位置有关,按存储方式分为( )。
【单选题】在磁盘和磁带这两种磁介质存储器中,存取时间与存储单元的物理位置有关,按存储方式分( )。
【单选题】When 'product differentiation' is adopted, the product is usually______.
A.
advertised as something different from similar products
B.
good either for your health or for the environment
C.
very profitable for the company
D.
environmentally friendly
【判断题】依我国现行《专利法》,计算机程序是通过授予专利进行保护的。